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In the reaction M -> N, doubling the concentration of M increases the rate of disappearance of M by a factor of 8. What is the order of the reaction with respect to M?
- 4
- 3
- 2
- 1
Correct answer: 3
Solution
Rate ~ [M]ⁿ. Doubling [M] multiplies rate by 2ⁿ = 8, so n = 3.
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